Armature



V. G. APPLE.

ARMATURE.

APPLICATION FILED MAY 20, 1918.

1,438,423, Patented Dec. 12, 1922.

Patented Dec. 12, 1922.

UNITED STATES VINCENT G. APPLE, OF DAYTON, OHIO.

ARMATURE.

Application filed May 20, 1918. Serial No. 235,688.

To all whom it may concern:

Be it known that I, Vnzonxr G. lrriir, a citizen 0.. the United re. g tDayton, in the county of Montgomery and State Ohio, have inventedcertain new and useful 1111131'0". cments in Armatures, of which thefollowing is a specification.

One of the objects of my invention is to provide a cw and useful meansof making armaturcs. whereby to reduce the number of parts requ rod; torender the structure more stable 5. efficient and to generally improveand accelerate the mode of construction.

Another and more specific object of my in- 15 volit on to provide animproved means of r aclr. commutator segments to the paired teimin ofthe armature conductors,

i ihereby the inner and outer circumferentirl surfaces of the commutatormay be used.

y or jointly, for contact with colbrushes, thus providing acommutatorhaving a greater capacity and a larger range of usefulness than when onesurface only is available for the purpose.

Other, further and more specific objects of my invention will becomereadily apparent, to persons skilled in the art, from a consideration ofthe following description when taken in conjunction with the drawings,wherein Fig. 1 shows a section of an armature with a commutator sectionbeing welded thereto.

Fig. 2 shows a view in direction of the arrows of line 2-2 of Fig. 1.

Fig. 3 is a similar view showing the collecting brushes applied on theouter and the inner surface of the commutator so constructed.

In all the views the same reference charactors are employed to indicatesimilar parts.

In the selected embodiment 5 is a spider for supporting the core 6 of anarmature. The conductors 7 and 8, having their ends welded together at9, pass thru perforations or slots in the outer periphery of the core.10 is a shaft upon which the spider 5 temporarily is mounted, beingprevented from axial movement by a cap screw 11 which enters the shaftand which engages the hub 12 of the spider. A disc 13, preferably ofmetal, slidingly fits an insulating sleeve 14 that is placed over theshaft 10, and is the means for concentrically spacing and temporarilysupporting the armature terminals 9, in concentric alignment. A lateralprojection 15, of the disc 13,

supports a commutator segment uide comprising an insulating ring 16.This ring is provided with radially disposed spaced-apart plates 17, tolie between the commutator sections 18 and for properly spacingthecommutator sections apart in the process of welding them to the ends ofthe terminal 9, of the armature conductorsv A. disc 19 of insulatingmaterial prevents contact of the metal disc 13 with any of the metallicpart of the armature structure except the conductors or terminals 9 atthe inner surface thereof. A ring 20 overlies the outer surface of theterminals 9, and clamps them tightly to the outer peripheral surface ofthe disc 13, so as to bring them all into concentric arrange ment, oralignment with the shaft 10, and to make electrical connection betweenthe terminals and the ring 20. The disc 13 is electrically connectedwith the ring 20, by a wire 21. The diameter of the ring 20 is capableof being contracted by the perforate racially projecting ears 22, thruwhich the bolt 24 passes and over which is threaded a series of nuts 25.Another wire 26 communicates with a suitable source of electric current,not shown, for conducting the current to the armature and commutatorterminals for the purpose of welding the re spective members together.

An axially movable arm 27 comprising a part of the hub 28. is slidableupon the sleeve 14, being resiliently moved toward the armature by arelatively strong spring 29. A handle 30 is employed for moving the armin the opposite direction, against the effect of the yielding spring.The inner upper face of the arm 27 is provided with a contact shoe 31for engagement with the ends of each of the commutator segments 18, whenbrought into connection therewith, for the purpose of welding thesegments, or sections, to the terminals 9 of the armature conductors. Awire 32 leads to the same source of current as the wire 26 forconducting the current to the welding apparatus.

The insulating ring 16 is provided with as many radially extendedpockets as there are commutator segments 18. These pockets are containedbetween adjacent separating plates 17 After the armature ends 9 havebeen arranged in proper concentric relation with their end faces in avertical plane perpendicular to the axis, the segments 18, are one at atime, placed in the pockets between to slip back over the ends oi thedisc 13 and its sides between theinner and cute the commutator. I havealso shown a brush VIN CENT G. APPLE.

the separators 17, and the shoe 31 of the arm holder 36 carrying abrush. and spring 30 27 is brought into contact with the outer pressedby spring; 38 and bearing upon the surface of the commutator segment 18.inner surface of the cor tater: Either set The tension of the spring 29will produce of brushes may be noon in connection with 1 sufiicientpressure to move the arm 27 in the commutator or both may he used onewardly, thereby pressing the inner surface on the outer surface ot thecommutator and i of. the commutator section into contact With one set onthe inner surface oi the commutathe surface of the respective pairs oftermitor, in order to increase the current carrying; nals, as they areioined together at 9, therecapacity of the commutator.

by causing a Weld. After a Weld between Having described my invention,\VllLt one commutator segment and its paired terclaim 1s: 40

minals has been completed, the arm 27 lit combination with an if" movedback and slightly rotated and another a series of paired conductors aresegment 'is placed in a pocket between the the end ot the core. theseparators 17 and the process repeated until conductors terminating inthe entire number of segments have thus same diametric plane; a di beenbutt-Welded to the ends of the terminals ring having a collect in I ieceouts and 9. After this has been accomplished the inside of the ring,each cylindrical surface armature may b removed from the Welding toreceive collecting; brushes, the bein a apparatus, the ring 20 havingbeen loosened segment of the ring for each pair of con-- permits thecommutator and thc'terminals 9 ductcrs. and each segment joined at oneor". 50

iular carries the ring 20 With it, after which surfaces to a pair ofconductors to render the ring may be removed from the finished both saidannular r.:urtaci. available tor commutator. commutating; purposes.

In Fig. 3 I have shown a brush holder 33 in testimony whereof hereuntoset my 55 carrying a brush 34E, spring pressed by hand. spring 35 andengaging the outer surface of dec commutator 4

